Stable carbocations. CXXIX. Mechanism of the benzidine and Wallach rearrangements based on direct observation of dicationic reaction intermediates and related model compounds

1972 ◽  
Vol 94 (21) ◽  
pp. 7438-7447 ◽  
Author(s):  
George A. Olah ◽  
Kenneth Dunne ◽  
David P. Kelly ◽  
Y. K. Mo
Keyword(s):  
Direct Observation ◽  
Reaction Intermediates ◽  
Model Compounds ◽  
Related Model

Synthesis of 4,4′-bis(dicyanomethylene)bicyclohexylidine

1977 ◽  
Vol 55 (5) ◽  
pp. 782-784 ◽  
Author(s):  
Larry D. Pedersen ◽  
Larry Weiler
Keyword(s):  
Long Range ◽  
Title Compound ◽  
Uv Spectra ◽  
Model Compounds ◽  
Range Interaction ◽  
Related Model ◽  
Dihydro Derivative ◽  
Long Range Interaction

4,4′-Bis(dicyanomethylene)bicyclohexylidine and its dihydro derivative, 4,4′-bis(dicyanomethylene)bicyclohexyl were prepared from the condensation of malononitrile with the corresponding diketone. Bicyclohexylidene-4,4′-dione was synthesized from the monoketal of cyclohexanedione via the symmetric azosulfide.The uv spectra of the 4,4′-bis(dicyanomethylene)bicyclohexylidine and related model compounds indicate the presence of a long range interaction between the dicyanomethylene groups of the title compound.

Evaluation of atmospheric solids analysis probe mass spectrometry for the analysis of coal-related model compounds

Fuel ◽  
2014 ◽  
Vol 117 ◽  
pp. 556-563 ◽  
Author(s):  
Shou-Ze Wang ◽  
Xing Fan ◽  
Ai-Li Zheng ◽  
Yu-Gao Wang ◽  
You-Quan Dou ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Model Compounds ◽  
Related Model ◽  
Solids Analysis

Hemoglobin Studies. I. The Combination of Carbon Monoxide with Hemoglobin and Related Model Compounds

1958 ◽  
Vol 80 (5) ◽  
pp. 1109-1113 ◽  
Author(s):  
Jui H. Wang ◽  
Akitsugu Nakahara ◽  
Everly B. Fleischer
Keyword(s):  
Carbon Monoxide ◽  
Model Compounds ◽  
Related Model

13C nuclear magnetic resonance spectra of the spirobenzylisoquinoline alkaloids and related model compounds

1977 ◽  
Vol 55 (18) ◽  
pp. 3304-3311 ◽  
Author(s):  
Donald W. Hughes ◽  
Bala C. Nalliah ◽  
Herbert L. Holland ◽  
David B. MacLean
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Isoquinoline Alkaloids ◽  
Model Compounds ◽  
Related Model ◽  
Nuclear Magnetic Resonance Spectra ◽  
13C Nuclear Magnetic Resonance ◽  
C Nmr ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

The natural abundance 13C nuclear magnetic resonance spectra of a number of spirobenzylisoquinoline alkaloids and related model compounds have been recorded. The carbon resonances of the alkaloids were assigned by comparison with the spectra of other isoquinoline alkaloids and with those of the model compounds. It has been shown that 13C nmr spectroscopy may be used to differentiate between diastereomers in this series.

Evaluation of coal-related model compounds using tandem mass spectrometry

2018 ◽  
Vol 32 (16) ◽  
pp. 1462-1472 ◽  
Author(s):  
Guo-Sheng Li ◽  
Xueming Dong ◽  
Xing Fan ◽  
Chun-Yan You ◽  
Ge Wu ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Tandem Mass ◽  
Model Compounds ◽  
Related Model
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